Positive psychology can positively influence Chinese vocational college students in many different ways such as correcting students' behaviors and building students' confidence, while most colleges only teach positive psychology in traditional classes or training programs and ignore the extracurricular activities. This empirical study aims at filling the academic gap by applying a qualitative research methodology. Eight college students who have taken positive psychological courses were invited to share their experiences of attending extracurricular activities. According to the contributions of research participants, five super themes have been created. These findings clearly explain how extracurricular activities can help build students' positive attitudes from five different aspects. As one of the pioneer studies focusing on building vocational college students' positive psychology, this study is meaningful by laying a solid foundation with empirical data for future studies in the same direction to build up.